i cant properly take things out of my inventory and then my game crashed

Put the summary of the bug you're having here

What I expected to happen was:that i could click an item in my inventory and then click a spot in my hotbar and that it would appear in my hotbar
Describe what you thought should happen here

What actually happened was when I clicked the item in my inventory it wouldn't appear at my mouse and when I clicked the spot in my hotbar it didn't appear there
Describe what happened here

Steps to Reproduce:
1. go to inventory
2. click on any item in inventory
3. click on empty space in hotbar
4. nothing appears due to bug